Medicine Nobel goes to US-German trio for pioneering light-based control of cells

The 2023 Nobel Prize in Medicine has been awarded to American psychiatrist and neurologist Karl Deisseroth, along with German scientists Peter Hegemann and Georg Nagel. This recognition acknowledges their groundbreaking work in the field of optogenetics, which involves controlling nerve signals with light. By developing a molecular switch for nerve cells, these researchers have revolutionized the way scientists understand the brain and its functions.

Optogenetics allows scientists to selectively activate or inhibit specific neural circuits by using light. This groundbreaking technique has provided unprecedented insights into the neural circuits responsible for various behaviors, such as learning, fear, addiction, and movement. Consequently, it has paved the way for a deeper understanding of neurological and psychiatric disorders.

Although the method has been used in clinical medicine on a limited basis, primarily to treat a specific form of blindness, it holds immense potential for the future. Researchers are exploring its application in treating disorders like Parkinson's disease and epilepsy. The Nobel Assembly highlighted the transformative impact of this field, stating that it has fundamentally altered our understanding of the brain.

The laureates were honored for their discovery of the molecular switch, which enables researchers to manipulate individual neural circuits using light. The Nobel committee's chair, Per Svenningsson, emphasized that optogenetics has opened up new avenues for mapping the brain in ways previously unimaginable. The three laureates, Deisseroth, Hegemann, and Nagel, expressed their delight at receiving the prestigious award together, acknowledging the significance of their collective achievement.